Hiring a contractor? These 9 red flags — from no verifiable license to high-pressure deposit demands — consistently predict problems. Here is what to check before signing anything.
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If you're hiring a contractor for a home project, the difference between a smooth renovation and a costly nightmare usually comes down to what you check before signing anything. The biggest red flags: no verifiable license, pressure for large upfront cash payments, no written contract, and no local references. We reviewed BBB Scam Tracker data, FTC consumer complaints, and CSLB advisories to identify the 9 warning signs that consistently appear in bad-hire situations. This guide helps homeowners avoid costly contractor mistakes before they happen.
We analyzed contractor fraud reports and consumer complaints across four criteria:
| Criteria | Weight | Why It Matters |
|---|---|---|
| Frequency in fraud reports | High | Warning signs appearing in 30%+ of BBB/FTC complaints are most predictive |
| Financial risk to homeowner | High | Higher-dollar exposure gets more weight |
| Ease of verification | Medium | Red flags you can check before hiring are most actionable |
| Legal/licensing violations | Medium | Unlicensed work can void insurance and create personal liability |
Data sources: BBB Scam Tracker, FTC Consumer Sentinel Network, California Contractors State License Board (CSLB), National Association of the Remodeling Industry (NARI), National Roofing Contractors Association (NRCA).
Best for avoiding: Any homeowner in a state requiring contractor licensing
Risk level: High | Verification time: 5 minutes
Every state requiring contractor licenses maintains a free public lookup database. A contractor who can't provide a license number — or whose number doesn't match the registry — is operating illegally. Unlicensed work can void your homeowner's insurance claim and leave you personally liable for on-site injuries. The CSLB reports unlicensed contractors account for over 30% of annual consumer complaints in California alone.
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Who This Is Best For
Any homeowner hiring for electrical, plumbing, HVAC, roofing, or structural work. Cosmetic projects like painting may not require a license — check your state's specific threshold.
Best for avoiding: Any project over $3,000
Risk level: High | Verification time: Immediate
Legitimate contractors request 10–33% upfront to cover materials, with the remainder tied to project milestones. A demand for 50%+ — especially in cash — is the single most common pattern in contractor fraud cases tracked by the FTC. Once the cash is paid, the contractor often disappears or delivers substandard work with no recourse for the homeowner.
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Who This Is Best For
Every homeowner, no exceptions. Always get milestone-based payment terms in writing before any work begins.
Best for avoiding: Any project
Risk level: High | Verification time: Immediate
A written contract must specify scope of work, materials list, timeline, payment schedule, and change-order process. If a contractor resists putting terms in writing or says "we work on a handshake," walk away. Without a written contract, homeowners have almost no legal recourse in a dispute over quality, cost, or scope.
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Who This Is Best For
Every homeowner. A contractor who pushes back on written terms is a red flag without exception.
Best for avoiding: Any project over $2,000
Risk level: Medium-High | Verification time: 10 minutes
Established contractors have verifiable local history: Google reviews, BBB ratings, Angi listings, or NextDoor recommendations. A contractor with zero reviews, brand-new profiles, or only generic testimonials on their own website has no verifiable track record. Ask for 2–3 recent local references you can actually call.
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Who This Is Best For
Homeowners hiring for any project with visible, lasting results: roofing, kitchen/bath remodel, siding, landscaping.
Best for avoiding: Roofing, siding, gutters
Risk level: High | Verification time: Immediate
Storm chasers arrive after hail or wind events, claim your roof is severely damaged, and pressure you to sign immediately. They often inflate damage claims for insurance payouts, use substandard materials, and disappear after collecting payment. The NRCA explicitly warns homeowners never to sign anything on the spot from an unsolicited post-storm visit.
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Who This Is Best For
Any homeowner in hail-risk or storm-prone regions: Texas, Colorado, Kansas, Missouri, the Southeast.
Best for avoiding: Structural, electrical, plumbing, additions
Risk level: High | Verification time: 10 minutes
Permitted work is inspected by the city or county and creates a legal record of the improvement. Unpermitted work can require costly demolition to fix, makes your home harder to sell, and may void insurance coverage. If a contractor says "we don't need permits for this," verify with your local building department before accepting that claim.
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Who This Is Best For
Anyone doing structural work, electrical, plumbing, or square footage additions. Cosmetic work like interior painting typically does not require permits.
Best for avoiding: Any project with workers on your property
Risk level: High | Verification time: 15 minutes
Contractors should carry both general liability insurance and workers' compensation. Request the certificate of insurance (COI) and call the insurer listed to confirm it's current. If a worker is injured on your property and the contractor has no workers' comp, you may face liability under your homeowner's policy — or directly.
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Who This Is Best For
Any homeowner. Non-negotiable for any project involving a crew of workers on your property.
Best for avoiding: Remodels, large repairs
Risk level: Medium | Verification time: 30 minutes
Legitimate contractors provide itemized estimates with material specs and labor breakdowns. Vague estimates like "somewhere around $8,000–$15,000" without specifics are a setup for undisclosed change orders that appear mid-project. Always get three itemized estimates and compare them line by line.
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Who This Is Best For
Homeowners doing kitchen or bathroom remodels, roofing replacements, foundation repair, or any project with significant material costs.
Best for avoiding: Any project
Risk level: Medium-High | Verification time: Immediate
Legitimate contractors may have booking queues, but they do not create fake deadlines to rush your decision. "I have another job starting Monday so I need your deposit today" is a signal to slow down and complete all your other vetting steps. Reputable contractors expect you to get multiple quotes and take a day to review.
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Who This Is Best For
Every homeowner. A contractor who can't give you 48 hours to make a decision is not a contractor you want on your property.
| Red Flag | Risk Level | Verification Time | Deal Breaker? |
|---|---|---|---|
| No verifiable license | High | 5 min | Yes |
| Demands 50%+ upfront in cash | High | Immediate | Yes |
| No written contract | High | Immediate | Yes |
| No local references or reviews | Medium-High | 10 min | Often |
| Storm chaser unsolicited pitch | High | Immediate | Usually |
| Pulls no permits for permitted work | High | 10 min | Yes |
| No certificate of insurance | High | 15 min | Yes |
| Vague, shifting estimates only | Medium | 30 min | Often |
| High-pressure sign-today tactics | Medium-High | Immediate | Often |
This guide draws on BBB Scam Tracker consumer reports, FTC Consumer Sentinel Network complaint data, CSLB consumer advisories, NRCA storm chaser warnings, and NARI contractor selection guidelines. We cross-referenced patterns across contractor fraud complaints from 2024–2025 and weighted warning signs appearing in 30% or more of cases. Last updated: April 2026. We review this guide quarterly.
Search "[your state] contractor license lookup" — every state requiring licenses maintains a free public database. Enter the contractor's name or license number and confirm the status is active.
A fair deposit is 10–33% of total project cost. For jobs under $5,000, up to 33% is common. For larger projects, 10–15% is standard with the balance tied to completion milestones.
At minimum: scope of work with specific materials and grades, payment schedule with milestones, project start and end dates, change-order process, warranty terms, cleanup responsibilities, and signatures from both parties.
Yes — always. Request a certificate of insurance (COI) showing general liability and workers' compensation, then call the insurance company to confirm the policy is currently active.
In most states, yes, but if work fails or causes injury, your recourse is severely limited and your insurance claim may be denied for work performed by an unlicensed operator.
A change order is a written amendment to the original contract when scope, materials, or costs change mid-project. Always require written change-order approval before additional work begins.
Get at least three itemized estimates to establish a market-rate baseline and identify outliers. The lowest bid frequently signals inferior materials or missing scope.
Unpermitted work may require demolition and re-inspection at your expense, reduce your home's resale value, complicate disclosure in a sale, and void homeowner's insurance coverage for related claims.
Not always, but the combination of unsolicited approach plus pressure to sign immediately plus insurance-first framing is high-risk. A legitimate roofer will provide a license number, local references, and time to get a second opinion.
Choosing based on price alone. The lowest bid typically signals unlicensed work, inferior materials, or a plan to recover margin through undisclosed change orders mid-project.
This content is for informational purposes only. Contractor licensing requirements, permit thresholds, and insurance regulations vary by state and municipality. HomeSimple does not endorse specific contractors. Always verify credentials independently with your state licensing board and local building department before signing any contract or making any payment.
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